Pre-Bid RFI 200049_Response complete.pdf

DEPARTMENT OF THE AIR FORCE

HEADQUARTERS 72 AIR BASE WING (AFMC)

TINKER AIR FORCE BASE OKLAHOMA

19 Mar 26

MEMORANDUM FOR AFSC/PZIOC (ATTN: Sharla Flowers Brandon)

THROUGH: 72 ABW/CENM

FROM: 72 ABW/CEED

Tepa Companies

SUBJECT: Pre-Bid RFI Responses Project: WWYK200049 - Install Ventilation System - B3225

Reference: Memo, 11 Mar 26, Pre-Bid RFIs, WWYK200049 - Install Ventilation System - B3225

This office reviewed the referenced RFIs for the subject project and provided answers below.

Please forward to the contractor(s) for their use in preparing proposals

1. Request for information: Where is exact location for exhaust fan off of Walls. M101 shows fan location in-line with grid/column line with water line shut off valve. Ari and electric panel on wall, See attached photo :

Government Response: Locate exhaust fan to maintain code required clearances in front of existing panels. Indicate proposed location in ductwork shop drawings for review and approval.

(2) Request for information: Sheet M-501 has a detail for discharge air of Fan, what is the distance off floor, what distance off the floor is required height? direction of 45-degree elbow discharge into space?

Government Response: Terminate bottom of discharge 10’ AFF to the North.

(3) Request for information: Are fire dampers required?

Government Response: Yes. Original construction documents indicate 1 hour fire-rated CMU wall. Provide fire dampers in all ductwork penetrating the fire rated wall.

(4) Request for information: Are motorized dampers required when fans are not energized?

Government Response: No.

(5) Request for information: Will DALT testing be required on project?

Government Response: DALT is not required.

(6) Request for information: Does TAB need to be independent, or can a certified NEBB contractor perform TAB and work as one package for project?

Government Response: A firm certified by the AABC or NEBB is required to perform the TAB work.

(7) Request for information: On Specs provided, section 23 05 48.00 40 calls for vibration

$ Seismic Control, is the intent to provide this process or just the rubber vibration isolation (no spring isolation) and flexible connection on equipment and ductwork hang detail as shown on drawings S-101.

Government Response: The intent is for vibration isolation appropriate for the mass of the fans. Provide ductwork hang as detailed on sheet S-101.

(8) Request for information: On Sheet M-101, shows exhaust fan location in-line with grid/Column Line:

a. With Water Line/Shut-off Valve, Air Line and Electric panels on wall,

b. Where is exact location for exhaust fan off walls? See attached Picture

Government Response: Refer to response for Item #1.

(9) Request for information: Sheet M-501 has a detail for discharge air of Fan Government Response: Question is incomplete.

(10) Request for information: What distance off floor is required Height?

Government Response: Subject of question is unclear.

(11) Request for information: Direction of 45-degree elbow discharge into space?

Government Response: Subject of question is unclear.

(12) Request for information: Are Fire Dampers Required?

Government Response: Refer to response for Item #3.

(13) Request for information: Are Motorized Dampers required when fans are not energized?

Government Response: Refer to response for Item #4.

(14) Request for information: Does TAB need to be Independent or can a certified NEBB contractor perform TAB and work as one package for project.

Government Response: Refer to response for Item #6.

(15) Request for information: On Specs provided, section 23 05 48.00 40 calls for vibration

& Seismic Control, is the intent to provide this process or just the rubber vibration isolation (No Spring isolation) and Flexible connection on equipment and ductwork hanger detail as shown on drawings S-101 Government Response: Refer to response for Item #7.

(16) Request for information: Should UFGS Section 01 45 35 be added by TEPA to the specifications due to the requirement for special inspections listed on Sheet S-002?

Government Response: UFGS Section 01 45 35 can be added due to the fact it covers the inspection of cold-formed steel, reinforcement, connections, formwork and concrete.

(17) Request for information: Doesn’t the KTR need something to submit the SIOR qualifications against to TEPA for review, I.E. an item on the submittal register under the appropriate UFGS?

Government Response: KTR can refer to UFGS Section 01 45 35 for SIOR qualifications.

(18) Request for information: SOW 4.5(b) states that a structural engineer is required and does not need to be licensed in Oklahoma. Sheet S-002, Delegated Design, Note 1 clearly requires a structural engineer WITH an Oklahoma license. Which statement is true? Please advise.

Government Response: Since the ‘Order of Precedence’ has the ‘Drawings’ precedes the SOW in the hierarchy, the structural engineer is required to be licensed in Oklahoma.

(19) Request for information: E-101, Note 9 requires the KTR to ensure that the current grounding system in the building meets NEC 2022 requirements. How is the KTR supposed to do that without testing and incurring cost prior to any contract award?

Government Response: The Contractor's base bid shall include the cost to test the existing grounding system for NEC 2022 compliance and provide a report. Do not include costs for repairing the system in the base bid. If the system is found to be non-compliant after testing, the necessary repairs will be addressed via a change order.

(20) Request for information: Due to delegated design, are we required to supplement the existing specifications and submittal register?

Government Response: Yes

(21) Request for information: What level of design does the Government anticipate for the delegated design? Are we providing a 95% level detail or are we going through all of the traditional phases?

Government Response: Refer to SOW para 4.5 WORKING DOCUMENTS for level of design required.

(22) Request for information: If we are to utilize the existing structure for ductwork hangar support and it has fireproofing installed on it (I.E. intumescent coating), are we required to remove and re-apply the coating? If so, does this require QFPE involvement and design for such systems? Please advise.

Government Response: Yes. Indicate existing fireproofing, if present, on shop drawings and provide any supplemental information as required.

(23) Request for information: The deliverable table in SOW 4.3.3 does not account for any design submittals. Shouldn’t that be updated to reflect the required submittals for the delegated design?

Government Response: The intent is to provide Shop Drawings to delineate the design.

(24) Request for information: Please confirm the scope of design services expected by the

Government and identify the level of design that will be considered acceptable.

Government Response: Refer response for Item #23.

(25) Request for information: Can an Inline Mixed Flow Exhaust fan be located in the

Doffing Room to keep from exhaust fan being XP Rated?

Government Response: No. It was deemed to be impractical for the volume of space present.

(26) Request for information: Is there a requirement to monitor the Supply and Exhaust Fan system to confirm airflow/pressure offset?

Government Response: No. Provide air balance such that there is at least 0.02” of pressure difference between the Doffing room and the administration area.

(27) Request for information: Is there a requirement for motorized dampers on the exhaust between the Hangar and the Doffing booth?

(28) Request for information: Will air filters be required at inlet to either of the fans?

(29) Request for information: Is there a requirement for Smoke and Fire damper at wall penetration to Hangar?

Government Response: Refer to response for Item #3.

(30) Request for information: Will a Physical Indicator such as Thru-Wall Device or pressure gauge be required for user confirmation of operation?

(31) Request for information: Specification section 26 20 00.2.13 and submittal register line

144 call for receptacle. However, none are shown on the drawings. Please clarify where and what type of receptacles are required.

Government Response: Receptacles are not required.

(32) Request for information: Specification section 26 20 00.2.15 and submittal register line

147 call for enclosed circuit breakers. However, none are shown on the drawings.

Please clarify where and what type and size of enclosed circuit breakers are required.

Government Response: Enclosed circuit breakers are not required.

(33) Request for information: Specification section 26 20 00.3.5.4 and submittal register line

148 call for Ground fault receptacle test. However, no GFCI receptacles are shown on the drawings. Please clarify if GFCI’s are to be installed and their location.

Government Response: Receptacles are not required.

(34) Request for information: Specification section 26 20 00.2.12 and submittal register line

150 call for fuses. However, there is no indication on the drawings that fuses are required. Please clarify where these are required.

Government Response: The requirement for fuses in Specification 26 20 00.2.12 and Submittal Register line 150 is an error and is no longer applicable. The drawings are correct. No fuses are required.

See following page for POC and signature.

2. The points of contact for this project are:

a. Glen A. Kay, Project Manager. PH: 734-6917

b. Mark Williams, Construction Inspector. PH:582-9042

c. Joshua Wheeler, CSAG Program Manager. PH: 582-4826

d. Randall Floyd, Contracting Officer Representative (COR). PH: 730-320-6068

Glen A. Kay Floyd Randall Project Manager COR 72d Civil Engineering Directorate (Tepa) 72d Civil Engineering Directorate

00 Attachment(s):

cc:

Project folder